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Chemistry: The Central Science | 13th Edition | ISBN: 9780321910417 | Authors: Theodore E. Brown; H. Eugene LeMay; Bruce E. Bursten; Catherine Murphy; Patrick Woodward; Matthew E. Stoltzfus
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Which ions remain in solution, unreacted, after each of

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QUESTION:

Which ions remain in solution, unreacted, after each of the following pairs of solutions is mixed? (a) potassium carbonate and magnesium sulfate (b) lead nitrate and lithium sulfide (c) ammonium phosphate and calcium chloride

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QUESTION:

Which ions remain in solution, unreacted, after each of the following pairs of solutions is mixed? (a) potassium carbonate and magnesium sulfate (b) lead nitrate and lithium sulfide (c) ammonium phosphate and calcium chloride

ANSWER:

Problem 4.25

Which ions remain in solution, unreacted, after each of the following pairs of solutions is mixed? (a) potassium carbonate and magnesium sulfate (b) lead nitrate and lithium sulfide (c) ammonium phosphate and calcium chloride

                                                              Step by Step Solution

Step 1 of 3

(a)

Potassium carbonate and magnesium sulfate

The chemical reaction between potassium carbonate and magnesium sulfate is as follows.

$$ \mathrm{K}_{2} \mathrm{CO}_{3}(a q)+\mathrm{MgSO}_{4}(a q) \longrightarrow \mathrm{K}_{2} \mathrm{SO}_{4}(a q)+\mathrm{MgCO}_{3}(s) $$

In the above reaction magnesium carbonate is present in solid form and it is an insoluble precipitate.

And remaining potassium and sulphate ions are present in the solution and act as an ions.

Therefore, $$ \mathrm{K^{+} and SO_{4}^{2-}} are unreacted ions present in the solution.

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